Portion of a LED light bulb



FIG. 1 is a front view showing my new design;

FIG. 2 is a left view thereof;

FIG. 3 is a right view thereof;

FIG. 4 is a top view thereof;

FIG. 5 is a back view thereof; and,

FIG. 6 is a perspective view thereof.

The broken line showing of the light bulb portion is included for thepurpose of illustrating only and forms no part of the claimed design.

CLAIM The ornamental design for a portion of a LED light bulb, as shownand described.